Ayambil Oli (also called Navpad Oli) is a 9‑day Jain spiritual observance dedicated to worshipping the Navapad (nine supremacies): Arihant, Siddha, Acharya, Upadhyaya, Sadhu, and the three jewels—Samyak Darshan, Samyak Gyan, Samyak Charitra—along with Samyak Tap. Its purpose is to purify passions (kashayas), strengthen right faith, knowledge, and conduct, and accumulate punya through restraint and devotion.

What “Ayambil” means

• Ayambil is a form of external austerity (bahya tap). One eats only once in the day, and the food is very plain and simple—typically boiled, without taste-enhancing items. Commonly excluded are milk and milk products, oil/ghee, sugar/jaggery, and most spices. Water is taken only at prescribed times. Exact rules can vary by sangh/tradition; follow your guru or local maryada.

When it is observed

• It is kept twice a year for 9 days each, in the bright fortnight of Chaitra (March–April) and Ashwin (September–October). Local calendars may fix the exact start day slightly differently.

How it is practiced

• Daily Ayambil (one plain meal).
• Navapad/Siddhachakra aradhana and puja, samayik, pratikraman, svadhyaya, and charity.
• Extra care in ahiṁsā, satya, and inner calm.

Digambar and Shwetambar notes

• Shwetambar tradition emphasizes Siddhachakra Puja during these nine days, calling it Siddhachakra/ Navpad Oli.
• Digambar tradition performs Navapad Aradhana with similar focus on the nine supremacies.
• Dietary details and liturgical sequences may differ slightly; the spiritual intent is the same—tapas with devotion to the Navapad.

Essence

• Ayambil Oli is not just a dietary fast; it is nine days of inner purification, devotion to the Navapad, and careful conduct, meant to lessen attachment and aversion and nurture right faith, knowledge, and conduct.